Air deflector and water circulator



` vMaly 14, 1935. A w. RAvENlNG 0015598 AIR DEFLECTOR AND WATER (.HRCULATOR Filed April 1955 lfred' ldyenz'n,

@M imm Patented May 14, 1935 A 2,001,398 A1B. pensaron AND WATER orRoULAToR 'Alfredl/V. Ravening, West Springfield, Mass. `implication April 4, 1933, Serial No. 664,406

5 Claims.

My invention relates to anair deector and Water circulator for coal burning heaters or furnaces for boilers and the like, and it. has for its object to provide a device of this character which may be placed in the bed of coals and which will facilitate combustion of the fuel.

A further object of my invention is to provide a device of this character which will facilitate the heating of water to the maximum degree without waste of fuel.

A still further object is to provide a device of this character which may be cheaply and readily constructed and can be produced at a relatively low cost.

With these and `other objects in view, my invention will be readily understood upon reference to the accompanying drawing in whichi Figure l is a sectional view of a suitableboiler with my invention applied thereto;

Figure 2 is a vertical section of my device removed or detached from the boiler;

Figure 3 is a sectional plan view on line 3 3 of Figure 2;

Figure 4 is a sectional plan view on line 4 4 of Figure 2.

Upon referring to the drawing, A designates a boiler of any desired construction having a suitable support B and a grateC.

Located above the grate is my improved air deector and water circulating device D. This device may be centrally located if desired and suflciently high enough above the plane of the grate `to provide adequate clearance. This improved air deilector and Water circulator may be made in any suitable manner, but I prefer to form it from a small cylinder like'casting which may be suitably cored to provide upper and lower compartments I and 2. The upper compartment is for high temperature water and the lower compartment is for low temperature water.

These two compartments may be connected together by suitable tubes or passages 3. While I have obtained excellent results from only two of these passages, it is obvious that additional ones may be employed if desired.

The watervpasses from thelower compartment 2 through these passages 3 into the upper compartment and the high temperature water is then let oi through the pipe or passage ll.V Water is supplied to the compartment 2, preferably at the bottom thereof, by means of the pipe or passage 5. The chamber 2 is preferably annular, having the central air passage l, while the upper compartment I may have a ilat bottom 8 with a domed top 9.- The upper compartment! may be greater in diameter 'than the compartment 2. While these compartments are shown onv the outsideas ycylindrical in shape, it is obvious that they may be made of other contour. y

It will be noted that the inlet and outlet pipes and 5 serve to support the casting and are located substantially at the center of the fire pot. Low temperature water will enter through the pipe 5 intothe lower compartment 2 where it is suitably heated and the high temperature water rises through the passages 3 into compartthus supplying air at the'approximate center'of y l the burning fuel and tending to promote perfect combustion. Y

The upper compartment I being of larger diameter than the lower compartment 2, the passageway 'I will be kept open and clear from. waste fuel.

In use, my improved air deilectorV and water circulator is located approximately at the center of the ire pot above the grate. The device is embedded in the fuel above the grate and may be: entirely covered thereby and 'is practically submerged at all times in the incandescent fuel. The water entering the pipe 5, after being heated in the lower compartment, rises toy the upper compartment for a iirial heat treatment and then is conducted downwardly through the pipe 4 to the boiler, as before stated. The air entering the central passage 'l is deflected at right angles by the bottom wall of the upper compartment and supplies additional inating soot to a minimum, Areducing the ash content, and insuring perfect combustion.

What is claimed is: l y

l. A combined air deiiector and water circuair to promote perfect combusy tion at the upper part of the fuel bed, thus elimlator comprising a lower compartment having an air passageway therethrough, an upper water compartment spaced but a short distance from the lower compartment, connecting columns between the upper and lower compartments for supplying water from the lower compartment to the upper compartment, a discharge conduit for the upper compartment disposed in the air passageway of the lower compartment, and means for supplying water to the lower compartment.

2. A combined air dei-lector and watercirculator comprising a lower water compartment having a central air passage therethrough, an upper water compartment spaced but a short distance from the lower compartment, spaced connecting columns between the upper and lower compartmentsfor supplying water fromthe lower compartment to the upper compartment, a discharge outlet for the upper compartment disposed within the central air passage of the lower compartment, and means for supplying water to the lower compartment.

3. A combined air deflector and .water circulator comprising an annular lowerwater compartment having an air passage therethrough, an upper water compartment spaced a short distance above the lower compartment and disposedrover the air passage of the lower'compartment to deflect upcoming air radially, Vand water'colurnns connecting the upper and lower compartments.

4. Y A combined air deector and water circulator comprising a lower water'compartment having `a central air passagetherethrough, a

spaced upper water compartment disposed a short distance above the'lower lwater compartment and over the central air passage, the upper compartment being larger in diameter so that its edges overhang the edges of the lower compartment to prevent accumulation of residue in the central air passage, connections between the upper and lower compartments for supplying water from the lower to the upper compartment, and a discharge pipe for the upper compartment. i

5. A combined air deector and water circulator comprising an annular lower water compartment vertically disposed, defining a central air passage therein, a water inlet for the lower compartment,` an upper compartment spaced from the lower compartment and horizontally disposed, said lower compartment being located over the centraliar passage to deflect rising air currents outwardly at an angle to the central air passage, water columns connecting rthe upper andlower oompartments'for conducting water to the upper compartmentfrom` the lower compartment, and an outlet for the upper compartment extending downwardly through the central air passage. 

